A warning line should look like a warning section

[ci skip]
[ci skip] Add Doc of with_options for the case when inherited default options and original options have same keys
Improve Journey compliance to RFC 3986

The scanner in Journey fails to recognize routes that use literals
from the sub-delims section of RFC 3986.

This commit enhance the compatibility of Journey with the RFC by
adding support of authorized delimiters to the scanner.

Fix #17212
ActionController::InvalidCrossOriginRequest fails with 422 instead of 500
Fixes #15967
Merge pull request #17220 from Bounga/fix_journey_rfc_3986_compliance

Improve Journey compliance to RFC 3986
Use `#tr` instead of `#gsub`

`#tr` is more efficient than `#gsub` and can be used as a drop in
replacement in this context.
break cache if we're inside a "scoping" call. fixes #17052

For now, we don't want to take "scoping" calls in to account when
calculating cache keys for relations, so just opt-out.
make sure cache is not used for collection assocations too

follow up for #17052
:scissors: duplicated `require`s
Make the config actually copyable

The intention here is to make the required config copy-able from the console/logs, so add a newline at the end of the message to make that easier. (Otherwise it would be `... raise_in_transactional_callbacks = true (called from...`.)
delete leftover JoinOperation struct
Add ActiveJob to "Welcome to Rails" section

[ci skip]
Link to ActiveModel’s README in "Welcome to Rails"

A link to the README of each module is included in "Welcome to Rails",
only ActiveModel (and ActiveJob, see #17264) are missing.

[ci skip]
Remove broken http://tore.darell.no link

Replace with Twitter account, unless @toretore has a better
suggestion :ear since http://tore.darell.no returns 404.

[ci skip]
Raise an error for has_one associations which try to go :through a polymorphic association [#17263]
specify protocol for external links

to ensure correct parsing result of rdoc
Merge pull request #17270 from neumanrq/fix/external_links_to_json_project

specify protocol for external links to json project
Merge pull request #17266 from claudiob/fix-broken-tore-darell-link

Remove broken http://tore.darell.no link
Merge pull request #17265 from claudiob/add-link-to-active-model-readme

Link to ActiveModel’s README in "Welcome to Rails"
Merge pull request #17264 from claudiob/add-activejob-to-readme

Add ActiveJob to "Welcome to Rails" section